List of addresses and ports used by the game
If you experience connectivity issues - such as disconnects, problems with connection to the game server, or problems while accessing certain game modes, it is worth checking whether you have all ports used by the game open.
TCP Ports 443, 5229, 8081
UDP Ports 63900 through 64099
Also, here is a list of server addresses, in case you wish to self-diagnose some situation with a particular server via command prompt commands (pathping, ping, tracert, etc.), or just measure your latency values to any of them:
For instructions on how to forward ports, please contact either your ISP (Internet Service Provider) or manufacturer of your modem/router.